import React, {Component} from 'react';

//引入connect用于连接UI组件与redux
import {connect} from 'react-redux'
import {createDecrementAction, createIncrementAction, createIncrementAsyncAction} from "../../redux/actions/count";

class Count extends Component {
    // 加法
    increment = () => {
        const {value} = this.selectNumber
        this.props.createIncrementAction(value * 1)
    }
    // 减法
    decrement = () => {
        const {value} = this.selectNumber
        this.props.createDecrementAction(value * 1)

    }
    // 奇数加
    incrementIfOdd = () => {
        const {value} = this.selectNumber
        if (this.props.count % 2 !== 0) {
            this.props.createIncrementAction(value * 1)
        }

    }
    // 异步加
    incrementAsync = () => {
        const {value} = this.selectNumber
        this.props.createIncrementAsyncAction(value * 1, 1000)
    }

    render() {
        return (
            <div>
                 <h2>我是Count组件</h2>
                <h1>当前求和为：{this.props.countReducer},下方组件总人数为{this.props.personReducer.length}</h1>
                <select ref={c => this.selectNumber = c}>
                    <option value="1">1</option>
                    <option value="2">2</option>
                    <option value="3">3</option>
                </select>
                <button onClick={this.increment}>+</button>
                &nbsp;
                <button onClick={this.decrement}>-</button>
                &nbsp;
                <button onClick={this.incrementIfOdd}>当前求和为奇数再加</button>
                <button onClick={this.incrementAsync}>异步加</button>
                &nbsp;
            </div>
        );
    }

}


// 创建暴露一个容器组件
export default connect(
    state => state,
    {
        createIncrementAction,
        createDecrementAction,
        createIncrementAsyncAction
    }
)(Count)

